Setup and solve Proportions

Front

What is a proportion?

Back

A statement of 2 ratios that are equal to each other.

Front

What is the ratio of oatmeal to chocolate chip cookies if there are 6 chocolate chip cookies and 5 oatmeal cookies?

Back

5:6

Front

If a car travels 280 miles in 7 hours, how far will it travel in 12 hours?

Back

480 miles.

Front

If Shane can bake 120 dozen cookies in 5 days, how many days would it take to bake 800 dozen cookies?

Back

About 34 days.

Front

If a 12-ounce shampoo bottle lasts Mike 16 weeks, how long would an 18-ounce bottle last?

Back

24 weeks.

Front

What is the formula for setting up a proportion?

Back

Cross-multiply the two ratios.

Front

How do you find an unknown in a proportion?

Back

Set up the proportion and cross-multiply to solve for the unknown.

Front

What does it mean for two ratios to be equivalent?

Back

They represent the same relationship between quantities.

Front

If a recipe calls for 2 cups of flour for every 3 cups of sugar, what is the ratio of flour to sugar?

Back

2:3

Front

How can you express the ratio of 10 apples to 5 oranges?

Back

10:5 or simplified to 2:1.